public IEnumerable <StatementSyntax> GetInitialization()
{
var inputEnumeratorType = _ienumerator.CreateGenericSyntax(_inputType);
yield return(SH.LocalDeclaration(inputEnumeratorType, enumerator,
SF.IdentifierName(inputParameter).Dot("GetEnumerator").Invoke()));
}
private static MethodDeclarationSyntax GenerateCreateSut(
ClassDeclarationSyntax classDeclaration,
MethodInspector constructorInspector)
{
var methodBuilder = new MethodBuilder(GH.IdentifierToken("CreateSut"))
.Modifiers(Modifiers.Private);
var constructorParameters = constructorInspector
.Parameters
.Select(p => SF.Argument(
EGH.MemberAccess(
EGH.ThisMemberAccess(
GH.Identifier(MockName(p.Name))
),
GH.Identifier("Object")
)
)
);
methodBuilder.ArrowBody(
EGH.Arrow(
EGH.CreateObject(
SF.IdentifierName(classDeclaration.Identifier),
constructorParameters.ToArray())));
return(methodBuilder.Build());
}
public IEnumerable <StatementSyntax> GetFinalization()
{
yield return(SF.IfStatement(SF.BinaryExpression(SyntaxKind.GreaterThanExpression, SF.IdentifierName(outputIndex), SH.Literal(0)),
SF.ExpressionStatement(SF.IdentifierName(outputParameter).Dot("Write").Invoke(SF.IdentifierName(outputBuffer), SH.Literal(0), SF.IdentifierName(outputIndex)))));
yield return(SF.ReturnStatement());
}
public IEnumerable <StatementSyntax> GetYields(IEnumerable <ExpressionSyntax> yields, int numYields)
{
if (numYields == 0)
{
yield break;
}
if (numYields > BufferSize)
{
throw new NotImplementedException();
}
yield return(SF.IfStatement(SF.BinaryExpression(SyntaxKind.GreaterThanExpression, SF.IdentifierName(outputIndex), SH.Literal(BufferSize - numYields)),
SF.Block(
SF.ExpressionStatement(SF.IdentifierName(outputParameter).Dot("Write").Invoke(SF.IdentifierName(outputBuffer), SH.Literal(0), SF.IdentifierName(outputIndex))),
SH.Assignment(SF.IdentifierName(outputIndex), SH.Literal(0)))));
int index = 0;
foreach (var yieldSyntax in yields)
{
yield return(SH.Assignment(SF.ElementAccessExpression(SF.IdentifierName(outputBuffer), SF.BracketedArgumentList(SF.SingletonSeparatedList(SF.Argument(
SF.BinaryExpression(SyntaxKind.AddExpression, SF.IdentifierName(outputIndex), SH.Literal(index)))))),
yieldSyntax));
++index;
}
yield return(SH.Assignment(SF.IdentifierName(outputIndex), SH.Literal(numYields), SyntaxKind.AddAssignmentExpression));
}
public ExpressionSyntax GetInput()
{
return(SF.BinaryExpression(SyntaxKind.EqualsExpression,
SF.BinaryExpression(SyntaxKind.BitwiseAndExpression,
SF.IdentifierName(cachedInput),
SH.Literal(1)).Parenthesize(),
SH.Literal(1)));
}
public IEnumerable <StatementSyntax> GetMoveNext(StatementSyntax finalizer)
{
yield return(SF.IfStatement(SF.BinaryExpression(SyntaxKind.GreaterThanOrEqualExpression,
SF.PrefixUnaryExpression(SyntaxKind.PreIncrementExpression, SF.IdentifierName(inputIndex)), SF.IdentifierName(read)), SF.Block(
SH.Assignment(SF.IdentifierName(read), SF.IdentifierName(inputParameter).Dot("Read").Invoke(SF.IdentifierName(inputBuffer), SH.Literal(0), SF.IdentifierName(inputBuffer).Dot("Length"))),
SF.IfStatement(SF.BinaryExpression(SyntaxKind.EqualsExpression, SF.IdentifierName(read), SH.Literal(0)), finalizer),
SH.Assignment(SF.IdentifierName(inputIndex), SH.Literal(0))
)));
}
public IEnumerable <StatementSyntax> GetInitialization()
{
var bufferType = SF.ArrayType(SH.PredefinedType(SyntaxKind.ByteKeyword),
SF.SingletonList(SF.ArrayRankSpecifier(SF.SingletonSeparatedList((ExpressionSyntax)SH.Literal(BufferSize)))));
yield return(SH.LocalDeclaration(SF.IdentifierName("var"), outputBuffer,
SF.ArrayCreationExpression(bufferType)));
yield return(SH.LocalDeclaration(SH.PredefinedType(SyntaxKind.IntKeyword), outputIndex, SH.Literal(0)));
}
public IEnumerable <StatementSyntax> GetMoveNext(StatementSyntax finalizer)
{
yield return(SF.IfStatement(SF.BinaryExpression(SyntaxKind.GreaterThanExpression,
SF.PrefixUnaryExpression(SyntaxKind.PreIncrementExpression, SF.IdentifierName(bitIndex)), SH.Literal(7)),
SF.Block(_wrapped.GetMoveNext(finalizer).Concat(new StatementSyntax[] {
SH.Assignment(SF.IdentifierName(cachedInput), _wrapped.GetInput()),
SH.Assignment(SF.IdentifierName(bitIndex), SH.Literal(0))
})),
SF.ElseClause(SH.Assignment(SF.IdentifierName(cachedInput), SH.Literal(1), SyntaxKind.RightShiftAssignmentExpression))));
}
private static EventFieldDeclarationSyntax ToEventDclr(IEventSymbol eventSymbol)
{
string eventName = eventSymbol.Name;
string eventType = GetEventType(eventSymbol);
EventFieldDeclarationSyntax eventDclr = SF.EventFieldDeclaration(
SF.VariableDeclaration(SF.IdentifierName(eventType),
SF.SeparatedList(new[] { SF.VariableDeclarator(eventName) })))
.AddModifiers(SF.Token(SyntaxKind.PublicKeyword));
return(eventDclr);
}
private static ClassDeclarationSyntax GenerateWriteGrain(ClassDeclarationSyntax grainClass, ITypeSymbol swmrInterface, int readReplicaCount)
{
string grainName = grainClass.Identifier.Text;
string writerGrainName = SwmrUtils.GetWriteInterfaceName(grainName);
string writerInterfaceName = SwmrUtils.GetWriteInterfaceName(swmrInterface.Name);
ClassDeclarationSyntax writerGrain = GenerateClassSqueleton(writerGrainName).WithBaseList(RoslynUtils.BaseList(new[] { "Grain", writerInterfaceName }));
writerGrain = RoslynUtils.AddField(writerGrain, "ITopology<string>", "_topology");
writerGrain = writerGrain.AddMembers(GenerateOnActivateAsyncMethod(readReplicaCount));
string readReplicaInterfaceName = SwmrUtils.GetReadReplicaInterfaceName(swmrInterface.Name);
foreach (ISymbol member in swmrInterface.GetMembers())
{
IMethodSymbol methodSymbol = member as IMethodSymbol;
if (methodSymbol == null || IsReadOnlyMethod(methodSymbol) || new MethodInspector(methodSymbol).MethodName == "GetState")
{
continue;
}
MethodInspector methodInspector = new MethodInspector(methodSymbol);
MethodDeclarationSyntax methodImpl = GenerateMethodDeclaration(methodInspector);
methodImpl = SwmrUtils.AddSessionIdParameter(methodImpl).AddModifiers(SF.Token(SyntaxKind.PublicKeyword), SF.Token(SyntaxKind.AsyncKeyword)).WithSemicolonToken(SF.Token(SyntaxKind.None));
BlockSyntax statmentBlock = SF.Block();
statmentBlock = AddStatement(statmentBlock, "string grainId = this.GetPrimaryKeyString();");
statmentBlock = AddStatement(statmentBlock, string.Format("{0} grain = GrainFactory.GetGrain<{0}>(grainId);", swmrInterface.Name));
statmentBlock = AddStatement(statmentBlock, String.Format("{0} await grain.{1}({2});", methodInspector.ReturnType != "Task"? "var result =" : "", methodInspector.MethodName, string.Join(", ", methodInspector.MethodParams.Keys)));
statmentBlock = AddStatement(statmentBlock, "GrainState state = await grain.GetState();");
statmentBlock = AddStatement(statmentBlock, "string sessionNode = _topology.GetNode(sessionId);");
statmentBlock = AddStatement(statmentBlock, "IEnumerable<string> otherNodes = _topology.Nodes.Where(node => node != sessionNode);");
ForEachStatementSyntax forEachStatement = SF.ForEachStatement(
SF.PredefinedType(SF.Token(SyntaxKind.StringKeyword)),
SF.Identifier("node"),
SF.IdentifierName("otherNodes"),
SF.Block(SF.ParseStatement(GenerateSetStateStmt(readReplicaInterfaceName, @"node")))
);
statmentBlock = statmentBlock.AddStatements(forEachStatement);
statmentBlock =
AddStatement(statmentBlock, (string.Format("{0} {1}", "await",
GenerateSetStateStmt(readReplicaInterfaceName, @"sessionNode"))));
if (methodInspector.ReturnType != "Task")
{
statmentBlock = AddStatement(statmentBlock, "return result;");
}
methodImpl = methodImpl.WithBody(statmentBlock);
writerGrain = writerGrain.AddMembers(methodImpl);
}
return(writerGrain);
}
public static TypeSyntax CreateSyntax(this INamedTypeSymbol symbol)
{
Contract.Requires(symbol.CanBeReferencedByName);
if (symbol.IsGenericType)
{
return(symbol.CreateGenericSyntax(symbol.TypeArguments.Select(s => (TypeSyntax)(((INamedTypeSymbol)s).CreateSyntax())).ToArray()));
}
else
{
return(SF.IdentifierName(SF.Identifier(symbol.Name)));
}
}
public IEnumerable <StatementSyntax> GetInitialization()
{
yield return(SH.LocalDeclaration(SF.IdentifierName("var"), output,
SF.ObjectCreationExpression(_stringBuilder.CreateSyntax())
.WithArgumentList(SF.ArgumentList(SF.SeparatedList <ArgumentSyntax>()))));
var bufferType = SF.ArrayType(SH.PredefinedType(SyntaxKind.CharKeyword),
SF.SingletonList(SF.ArrayRankSpecifier(SF.SingletonSeparatedList((ExpressionSyntax)SH.Literal(BufferSize)))));
yield return(SH.LocalDeclaration(SF.IdentifierName("var"), outputBuffer,
SF.ArrayCreationExpression(bufferType)));
yield return(SH.LocalDeclaration(SH.PredefinedType(SyntaxKind.IntKeyword), outputIndex, SH.Literal(0)));
}
private BasePropertyDeclarationSyntax CreatePropertyDclr(IMethodSymbol methodSymbol, string propType)
{
if (methodSymbol.IsIndexerAccessor())
{
IndexerDeclarationSyntax indexerDclr = SF.IndexerDeclaration(
SF.ParseTypeName(propType))
.WithExplicitInterfaceSpecifier(SF.ExplicitInterfaceSpecifier(
SF.IdentifierName(methodSymbol.GetContainingInterfaceGenericQualifiedName())));
indexerDclr = indexerDclr.AddParameterListParameters(
RoslynUtils.GetMethodParameterSyntaxList(methodSymbol).ToArray());
return(indexerDclr);
}
string propName = methodSymbol.AssociatedSymbol.Name;
PropertyDeclarationSyntax propDclr = SF.PropertyDeclaration(SF.ParseTypeName(propType), SF.Identifier(propName))
.WithExplicitInterfaceSpecifier(SF.ExplicitInterfaceSpecifier(
SF.IdentifierName(methodSymbol.GetContainingInterfaceGenericQualifiedName())));
return(propDclr);
}
public SyntaxTree Generate(TransducerCompilation source)
{
var stb = source.Transducer;
var sourceNamespace = source.DeclarationType.ContainingNamespace.DeclaringSyntaxReferences[0].GetSyntax() as NamespaceDeclarationSyntax;
if (sourceNamespace == null)
{
throw new CodeGenerationException("Containing namespace declaration not found for " + source.DeclarationType);
}
// Follow the declaration of the original (partial) class
var classDecl = source.DeclarationType.DeclaringSyntaxReferences.Select(r => r.GetSyntax()).OfType <ClassDeclarationSyntax>().FirstOrDefault()
.WithLeadingTrivia().WithTrailingTrivia() // Strip any trivia
.WithMembers(SF.List <MemberDeclarationSyntax>())
.WithAttributeLists(SF.List <AttributeListSyntax>());
if (classDecl == null)
{
throw new Exception("Class declaration for " + source.DeclarationType + " not found");
}
classDecl = _concreteCG.Generate(source, stb, classDecl);
var automataNamespace = SF.IdentifierName("Microsoft").Qualified(SF.IdentifierName("Automata")).Qualified(SF.IdentifierName("CSharpFrontend"));
var root = SF.CompilationUnit()
.WithUsings(SF.List(new[]
{
SF.UsingDirective(SF.IdentifierName("System")),
SF.UsingDirective(SF.IdentifierName("System").Qualified(SF.IdentifierName("Text"))),
SF.UsingDirective(SF.IdentifierName("System").Qualified(SF.IdentifierName("IO"))),
SF.UsingDirective(SF.IdentifierName("System").Qualified(SF.IdentifierName("Collections")).Qualified(SF.IdentifierName("Generic"))),
SF.UsingDirective(automataNamespace),
}))
.WithMembers(SF.SingletonList((MemberDeclarationSyntax)SF.NamespaceDeclaration(sourceNamespace.Name)
.WithMembers(SF.SingletonList((MemberDeclarationSyntax)classDecl))));
var normalized = root.NormalizeWhitespace();
return(SF.SyntaxTree(normalized));
}
static IEnumerable <MemberDeclarationSyntax> ColumnToMembers(string column, IEnumerable <IFieldSymbol> fields)
{
var fieldsList = fields.ToList();
TypeSyntax columnElementType;
if (fieldsList.Count > 1)
{
var fieldGroupTypeName = SF.IdentifierName($"{column}_t");
yield return(SF.StructDeclaration(fieldGroupTypeName.Identifier)
.WithMembers(SF.List(fields.Select(x => SF.FieldDeclaration(SF.VariableDeclaration(
SF.IdentifierName(x.Type.Name),
SF.SingletonSeparatedList(SF.VariableDeclarator(x.Name))))).Cast <MemberDeclarationSyntax>())));
columnElementType = fieldGroupTypeName;
}
else
{
columnElementType = SF.IdentifierName(fields.First().Type.Name);
}
yield return(SF.FieldDeclaration(SF.VariableDeclaration(
SF.ArrayType(columnElementType, SF.SingletonList(SF.ArrayRankSpecifier())),
SF.SingletonSeparatedList(SF.VariableDeclarator(column)))));
}
public IEnumerable <StatementSyntax> GetMoveNext(StatementSyntax finalizer)
{
yield return(SF.IfStatement(SF.PrefixUnaryExpression(SyntaxKind.LogicalNotExpression, SF.IdentifierName(enumerator).Dot("MoveNext").Invoke()), finalizer));
}
public static AttributeSyntax AttributeWithArgument(string attributeName, params string[] attributeArguments)
{
return(SF.Attribute(SF.IdentifierName(attributeName),
SF.AttributeArgumentList()
.WithArguments(SF.SeparatedList(attributeArguments.Select(arg => SF.AttributeArgument(SF.IdentifierName(arg)))))));
}
public static AttributeSyntax Attribute(string attributeName)
{
return(SF.Attribute(SF.IdentifierName(attributeName)));
}
private static async Task <Document> GenerateCodeFixAsync(Document document,
ClassDeclarationSyntax node,
CancellationToken cancellationToken)
{
var semanticModel = await document.GetSemanticModelAsync(cancellationToken);
var symbol = semanticModel.GetDeclaredSymbol(node);
if (symbol is null)
{
throw new NullReferenceException(nameof(symbol));
}
var syntaxTree = await document.GetSyntaxTreeAsync(cancellationToken);
if (syntaxTree is null)
{
throw new NullReferenceException(nameof(syntaxTree));
}
var flags = GetMetadataFlags(symbol);
List <AttributeSyntax> list = new(3);
if ((flags & MetadataFlags.HasEditorGroup) == 0)
{
var args = SF.ParseAttributeArgumentList("(group_Unknown)");
list.Add(SF.Attribute(SF.IdentifierName("EditorGroup"), args));
}
if ((flags & MetadataFlags.HasMetaImage) == 0)
{
var args = SF.ParseAttributeArgumentList("(tex_)");
list.Add(SF.Attribute(SF.IdentifierName("MetaImage"), args));
}
if ((flags & MetadataFlags.HasMetaInfo) == 0)
{
string className = symbol.Name;
var args = SF.ParseAttributeArgumentList($"({nameof(Lang)}.Default, \"{ParsePascalName(className)}\", \"todo\")");
list.Add(SF.Attribute(SF.IdentifierName("MetaInfo"), args));
var args2 = SF.ParseAttributeArgumentList($"({nameof(Lang)}.{nameof(Lang.schinese)}, \"\", \"\")");
list.Add(SF.Attribute(SF.IdentifierName("MetaInfo"), args2));
}
if ((flags & MetadataFlags.HasMetaType) == 0)
{
MetaType metaType = 0; // 0 = MetaType.Undefined
if (symbol.HasBaseType("AncientMysteries.Items.AMStaff"))
{
metaType = MetaType.Magic;
goto mustBeIt;
}
if (symbol.HasBaseType("AncientMysteries.Items.AMMelee"))
{
metaType = MetaType.Melee;
goto mustBeIt;
}
if (symbol.HasBaseType("AncientMysteries.Items.AMChestPlate",
"AncientMysteries.Items.AMBoots",
"AncientMysteries.Items.AMEquipment",
"AncientMysteries.Items.AMHelmet"))
{
metaType = MetaType.Equipment;
goto mustBeIt;
}
if (symbol.HasBaseType("AncientMysteries.Items.AMThrowable"))
{
metaType = MetaType.Throwable;
goto mustBeIt;
}
if (symbol.HasBaseType("AncientMysteries.Items.AMDecoration"))
{
metaType = MetaType.Decoration;
goto mustBeIt;
}
if (symbol.HasBaseType("AncientMysteries.Items.AMGun"))
{
metaType = MetaType.Gun;
goto mustBeIt;
}
mustBeIt:
var args = SF.ParseAttributeArgumentList($"(MetaType.{metaType})");
list.Add(SF.Attribute(SF.IdentifierName("MetaType"), args));
}
if (list.Count == 0)
{
return(document);
}
var updatedNode = node;
foreach (var item in list)
{
updatedNode = updatedNode.AddAttributeLists(SF.AttributeList(SF.SingletonSeparatedList(item)));
}
var root = await syntaxTree.GetRootAsync(cancellationToken);
var updatedSyntaxTree = root.ReplaceNode(node, updatedNode);
return(document.WithSyntaxRoot(updatedSyntaxTree));
}
private static async Task <Document> GenerateDiscriminatedUnion(
Document document,
ClassDeclarationSyntax classDeclarationSyntax,
CancellationToken cancellationToken)
{
var rootNode = classDeclarationSyntax.Parent;
if (rootNode == null)
{
return(document);
}
var duMembers = GetCandidateMethods(classDeclarationSyntax);
if (duMembers.Count == 0)
{
return(document);
}
var factoryMethodRewriter = new FactoryMethodRewriter();
var newClassDeclaration = factoryMethodRewriter.Visit(classDeclarationSyntax);
rootNode = rootNode.ReplaceNode(classDeclarationSyntax, newClassDeclaration);
List <(MethodDeclarationSyntax method, ClassDeclarationSyntax cl)> candidates =
duMembers.Select(m => (m, FindCurrentCaseDeclaration(rootNode, GetGeneratedClassName(m))))
.ToList();
var declarationsCleaner = new ClassOccurencesCleaner(candidates.Select(p => p.cl).Where(p => p != null).ToList());
rootNode = declarationsCleaner.Visit(rootNode);
// TODO: Methods returning types defined in other assemblies should probably be rejected,
// but lets say it is user's responsibility to use this refactoring wisely.
var baseClassIdentifier = SF.IdentifierName(classDeclarationSyntax.Identifier);
foreach (var(duCandidate, prevDeclaration) in candidates)
{
var generatedClassName = GetGeneratedClassName(duCandidate);
if (generatedClassName == default)
{
return(document);
}
var properties = duCandidate.ParameterList.Parameters.Select(ToProperty).ToList();
var constructorDeclaration = properties.Count > 0 ?
ConstructorGenerationHelper.FromPropertiesWithAssignments(
generatedClassName,
properties)
: null;
var members = new List <MemberDeclarationSyntax>(properties);
rootNode = UpdateOrAddCaseDefinition(rootNode, generatedClassName, baseClassIdentifier, properties, constructorDeclaration, prevDeclaration);
}
// Update document
var tree = await document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
var root = await tree.GetRootAsync(cancellationToken).ConfigureAwait(false);
var newRoot = root.ReplaceNode(classDeclarationSyntax.Parent, rootNode);
var newDocument = document.WithSyntaxRoot(newRoot);
return(newDocument);
}
public static MemberAccessExpressionSyntax Dot(this ExpressionSyntax expression, string field)
{
return(SF.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression, expression, SF.IdentifierName(field)));
}
public ExpressionSyntax GetInput()
{
return(SF.IdentifierName(enumerator).Dot("Current"));
}
public static BaseListSyntax BaseList(IEnumerable <string> names)
{
return(SF.BaseList(SF.SeparatedList <BaseTypeSyntax>(names.Select(name => SF.SimpleBaseType(SF.IdentifierName(name))))));
}
public static ParameterSyntax CreateParameter(string type, string name)
{
return(SF.Parameter(new SyntaxList <AttributeListSyntax>(), new SyntaxTokenList(), SF.IdentifierName(type), SF.Identifier(new SyntaxTriviaList().Add(SF.Space), name, new SyntaxTriviaList()), null));
}
public static BaseListSyntax AddBase(BaseListSyntax baseList, string baseName)
{
baseList = baseList.AddTypes(SF.SimpleBaseType(SF.IdentifierName(baseName)));
return(baseList);
}
public ExpressionSyntax GetInput()
{
return(SF.ElementAccessExpression(SF.IdentifierName(inputBuffer),
SF.BracketedArgumentList(SF.SingletonSeparatedList(SF.Argument(SF.IdentifierName(inputIndex))))));
}
public static ArgumentSyntax ArgumentFromIdentifier(SyntaxToken identifier) => SF.Argument(SF.IdentifierName(identifier.WithoutTrivia()));
public async Task <CodeGenResult> CodeGen(Workspace workspace, Project project)
{
CompilationUnitSyntax cu = SF.CompilationUnit();
var usings = new HashSet <string>();
bool copyUsings = false;
foreach (Document document in project.Documents)
{
SyntaxTree syntaxTree = await document.GetSyntaxTreeAsync();
_semanticModel = await document.GetSemanticModelAsync();
IEnumerable <ClassDeclarationSyntax> classes =
syntaxTree.GetRoot().DescendantNodes().OfType <ClassDeclarationSyntax>();
foreach (var classNode in classes)
{
if (!RoslynUtils.IsPublic(classNode))
{
continue;
}
ITypeSymbol swmrInterface = FindSwmrInterface(classNode);
if (swmrInterface == null)
{
continue;
}
var namespaceNode = classNode.Parent as NamespaceDeclarationSyntax;
if (namespaceNode == null)
{
throw new Exception("A grain must be declared inside a namespace");
}
usings.UnionWith(syntaxTree.GetRoot().DescendantNodes().OfType <UsingDirectiveSyntax>().Select(usingDirective => usingDirective.Name.ToString()));
int replicaCount = GetReadReplicaCount(swmrInterface);
NamespaceDeclarationSyntax namespaceDclr = SF.NamespaceDeclaration(SF.IdentifierName(namespaceNode.Name.ToString())).WithUsings(namespaceNode.Usings);
namespaceDclr = namespaceDclr.AddMembers(
GenerateWriteGrain(classNode, swmrInterface, replicaCount),
GenerateReadGrain(classNode, swmrInterface, replicaCount),
GenerateReadReplicaGrain(classNode, swmrInterface)
);
usings.UnionWith(namespaceNode.Usings.Select(@using => @using.Name.ToString()));
cu = cu.AddMembers(namespaceDclr);
// only copy the usings if at least one class was generated
copyUsings = true;
}
}
if (copyUsings)
{
usings.UnionWith(GetCommonUsings());
}
return(new CodeGenResult(Formatter.Format(cu, workspace).ToString(), usings));
}
public static IdentifierNameSyntax Identifier(string name) => SF.IdentifierName(name);
public IEnumerable <StatementSyntax> GetMoveNext(StatementSyntax finalizer)
{
yield return(SF.IfStatement(SF.BinaryExpression(SyntaxKind.GreaterThanOrEqualExpression,
SF.PrefixUnaryExpression(SyntaxKind.PreIncrementExpression, SF.IdentifierName(inputIndex)), SF.IdentifierName(inputParameter).Dot("Length")),
finalizer));
}